Question

a bus move from point a to b which 5 km and then moves from point b to c which is 12 km find its displacement the whole journey takes 90 min​

Answer 1

Let distance from A to B be x

Time for travel from A to B= x/20

Time for travel from B to A= x/30

Hence,speed for total distance

=24 km\hr

Answer 2

Answer:

An object can have zero displacement even when it has moved a distance and shown some displacement. This takes place when the final position of an object coincides with its own initial position. Let's say, if a person moves around circular area and comes back to the place from where he started then the displacement will be zero. the right answer is 24km/hr